ROTC. As much as possible.
My favorite cousin joined the army decades ago. She went to college, though, and went through ROTC there before enlisting. She went through various training including parachuting (just training, nothing major). She went to various posts before meeting her husband in Seattle, who also was Army. They have since been in various positions until her husband retired (she quit the Army a while back), including much in Germany and also in Egypt. (She was returning to Egypt from leave at the time of that airline crash from NY - scary!) They are back in Germany for the Army because they offered HER a job teaching German/English as needed (that was her major in college), and her husband went with her.
Maybe your daughter could encourage my twin nieces to join. Regardless of the PC, I think they could still get a nice kick in the respective butts that would straighten them out.
Can one do ROTC in college if not previously enrolled in HS? We have a friend who’s son is ROTC at uni, but they had a HS program and got a good scholarship.